"Thomas F. O'Connell" <tf@o.ptimized.com> writes:
> 1. What aspect of postgres' memory usage would create an "out of
> memory" condition?
I'm guessing you ran the box out of swap space --- look into what other
processes got started as a result of adding the NFS mount, and how much
memory they wanted to eat.
> 3. What would cause postgres to die from a signal 11?
> I've also got a core file if that's necessary for further forensics.
Send gdb backtrace, please.
regards, tom lane